public IActionResult GetFilteredFeed(string feedUrl, string tags)
{
var request = (HttpWebRequest)WebRequest.Create($"https://localhost:44352/api/v1/feed?feedUrl={feedUrl}");
request.Accept = "application/xml";
var response = request.GetResponse();
using var streamReader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
var xmlSerializer = new XmlSerializer(typeof(FeedItemList));
var feedItemList = (FeedItemList)xmlSerializer.Deserialize(new StringReader(streamReader.ReadToEnd()));
var listOfTags = tags?.Split(';');
var filteredFeedItemList = new FeedItemList();
if (listOfTags != null && listOfTags.Any())
{
if (feedItemList != null)
{
foreach (var feedItem in feedItemList.Items.Where(feedItem =>
listOfTags.Any(tag => feedItem.Summary.ToUpper().Contains(tag.ToUpper()))))
{
filteredFeedItemList.Items.Add(feedItem);
}
}
return(Ok(filteredFeedItemList));
}
return(Ok(feedItemList));
}
public Task <FeedItemList> StartPollingRssSourcesOnSchedule(string feedUrl, string tags, string recipients)
{
var waitHandle = new ManualResetEvent(false);
FeedItemList feedItemList = null;
ThreadPool.QueueUserWorkItem(state =>
{
feedItemList = GetFeedItemList(feedUrl, tags).Result;
waitHandle.Set();
});
waitHandle.WaitOne();
ThreadPool.QueueUserWorkItem(state =>
SendFeedToRecipients(feedUrl, tags, recipients));
return(Task.FromResult(feedItemList));
}
public IActionResult GetFeed(string feedUrl)
{
var formatter = new Rss20FeedFormatter();
using var reader = XmlReader.Create(feedUrl);
formatter.ReadFrom(reader);
var feedItemList = new FeedItemList();
foreach (var feedItem in formatter.Feed.Items)
{
feedItemList.Items.Add(new FeedItem
{
Title = feedItem.Title.Text,
Link = feedItem.Links.First().Uri.ToString(),
Summary = feedItem.Summary.Text
});
}
return(Ok(feedItemList));
}
public static string RssFeedToString(FeedItemList feeItemList)
{
return(feeItemList.Items.Aggregate(string.Empty,
(current, feedItem) =>
current + (feedItem.Title + " " + feedItem.Link + Environment.NewLine)));
}
